CN100479244C - A fuel battery flow guiding polarized plate without water blockage - Google Patents
A fuel battery flow guiding polarized plate without water blockage Download PDFInfo
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- CN100479244C CN100479244C CNB2006100275476A CN200610027547A CN100479244C CN 100479244 C CN100479244 C CN 100479244C CN B2006100275476 A CNB2006100275476 A CN B2006100275476A CN 200610027547 A CN200610027547 A CN 200610027547A CN 100479244 C CN100479244 C CN 100479244C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention relates to fuel battery guiding board which is not easy to stop water, the guiding board is guiding two-way board, said guiding two-way board comprises positive air guiding groove, negative hydrogen guiding groove, middle cooling flow interlayer, said flow hole which air or hydrogen in and out is single hole for in, two or more hole for out, guiding groove and connecting groove which connects guiding groove are set between flow hole for air or hydrogen, the guiding groove and connecting groove are all designed to direct flow groove or nearly direct flow groove; said flow hole for cooling liquid is single hole or double holes or more holes for in, two holes or more holes for out, guiding groove and connecting groove which connects guiding groove are set between flow hole for cooling liquid, the guiding groove and connecting groove are all designed to direct flow groove or nearly direct flow groove. Comparing with current technique, the invention can make liquid flow on liquid field evenly, freely; jam of guiding groove can be avoided.
Description
Technical field
The present invention relates to fuel cell, relate in particular to a kind of flow guide plate of fuel cell that is difficult for water blockoff.
Background technology
Electrochemical fuel cell is a kind of device that hydrogen fuel and oxidant can be changed into electric energy and product.The internal core parts of this device are membrane electrode (Membrane Electrode Assembly are called for short MEA), and membrane electrode (MEA) is made up of as carbon paper a proton exchange membrane, two porous conductive materials of film two sides folder.The catalyst that contains the initiation electrochemical reaction of even tiny dispersion on two boundary faces of film and carbon paper is as the metal platinum catalyst.The electronics that the membrane electrode both sides can will take place to generate in the electrochemical reaction process with conductive body is drawn by external circuit, constitutes current circuit.
At the anode tap of membrane electrode, fuel can pass porousness diffusion material (carbon paper) by infiltration, and electrochemical reaction takes place on catalyst surface, lose electronics, form cation, cation can pass proton exchange membrane by migration, arrives the other end cathode terminal of membrane electrode.At the cathode terminal of membrane electrode, contain the gas of oxidant (as oxygen), as air, pass porousness diffusion material (carbon paper), and the generation electrochemical reaction obtains electronics on catalyst surface, forms anion by infiltration.The cation of coming in the anion and the anode tap migration of cathode terminal formation reacts, and forms product.
Adopting hydrogen is fuel, and the air that contains oxygen is in the Proton Exchange Membrane Fuel Cells of oxidant (or pure oxygen is an oxidant), and fuel hydrogen has just produced hydrogen cation (or being proton) in the catalytic electrochemical reaction of anode region.Proton exchange membrane helps the hydrogen cation to move to the cathodic region from the anode region.In addition, proton exchange membrane is separated the air-flow and the oxygen containing air-flow of hydrogen fuel, they can not mixed mutually and produces explosion type reaction.
In the cathodic region, oxygen obtains electronics on catalyst surface, forms anion, and moves the hydrogen cation reaction of coming, reaction of formation product water with the anode region.In the Proton Exchange Membrane Fuel Cells that adopts hydrogen, air (oxygen), anode reaction and cathode reaction can be expressed in order to following equation:
Anode reaction: H
2→ 2H
++ 2e
Cathode reaction: 1/2O
2+ 2H
++ 2e → H
2O
In typical Proton Exchange Membrane Fuel Cells, membrane electrode (MEA) generally all is placed in the middle of the pole plate of two conductions, and quarter is milled by die casting, punching press or machinery in the surface that every block of flow guiding electrode plate contacts with membrane electrode, and formation is the guiding gutter of one or more at least.These flow guiding electrode plates can be the pole plates of metal material, also can be the pole plates of graphite material.Water conservancy diversion duct on these flow guiding electrode plates and guiding gutter import fuel and oxidant the anode region and the cathodic region on membrane electrode both sides respectively.In the structure of a Proton Exchange Membrane Fuel Cells monocell, only there is a membrane electrode, the membrane electrode both sides are respectively the guide plate of anode fuel and the guide plate of cathode oxidant.These guide plates are both as the current collector motherboard, also as the mechanical support on membrane electrode both sides, guiding gutter on the guide plate acts as a fuel again and enters the passage of anode, cathode surface with oxidant, and as the passage of taking away the water that generates in the fuel cell operation process.
In order to increase the gross power of whole Proton Exchange Membrane Fuel Cells, two or more monocells can be connected into battery pack or be unified into battery pack by the mode that tiles usually by straight folded mode.In straight folded, in-line battery pack, can there be guiding gutter on the two sides of a pole plate, and wherein one side can be used as the anode guide face of a membrane electrode, and another side can be used as the cathode diversion face of another adjacent membranes electrode, and this pole plate is called bipolar plates.A series of monocell connects together by certain way and forms a battery pack.Battery pack tightens together by front end-plate, end plate and pull bar usually and becomes one.
A typical battery stack generally includes: the water conservancy diversion import and the flow-guiding channel of (1) fuel and oxidant gas are distributed to fuel (as hydrogen, methyl alcohol or the hydrogen-rich gas that obtained by methyl alcohol, natural gas, gasoline) and oxidant (mainly being oxygen or air) in the guiding gutter of each anode, cathode plane equably after reforming; (2) import and export and the flow-guiding channel of cooling fluid (as water) are evenly distributed to cooling fluid in each battery pack inner cooling channel, the heat absorption that hydrogen in the fuel cell, the exothermic reaction of oxygen electrochemistry are generated and take battery pack out of after dispel the heat; (3) outlet of fuel and oxidant gas and corresponding flow-guiding channel, fuel gas and oxidant gas are when discharging, and portability goes out the liquid that generates in the fuel cell, the water of steam state.Usually, the import and export of all fuel, oxidant, cooling fluid are all opened on the end plate of fuel battery or on two end plates.
Proton Exchange Membrane Fuel Cells can be used as the dynamical system of delivery vehicles such as all cars, ship, can make portable, portable, fixed Blast Furnace Top Gas Recovery Turbine Unit (TRT) again.The Proton Exchange Membrane Fuel Cells electricity generation system must comprise fuel cell pack, fuel hydrogen supply, air supply, cooling heat dissipation, various piece such as control and electric energy output automatically.Stable and the reliability of Proton Exchange Membrane Fuel Cells operation is very important to the application as car, ship power system or movable Blast Furnace Top Gas Recovery Turbine Unit (TRT).Stable and the reliability that wherein improves fuel cell pack is crucial.
At present, pem fuel cell stack in the design of each fluid passage, usually adopt sacrifice pole plate effectively utilize area, offer fluid bore in the same position of each membrane electrode and pole plate, and with each piece membrane electrode and pole plate through each fluid passage of superimposed composition.That is to say, be equipped with the fluid bore that fuel advances, fuel goes out, oxidant advances, oxidant goes out, cooling fluid advances, cooling fluid goes out on every membrane electrode and the pole plate, these membrane electrodes and guide plate are just formed fuel battery through vertical after superimposed, and the fuel that these fluid bore have just been formed fuel battery inside into and out of; Oxidant into and out of; Cooling fluid into and out of each fluid flow guiding passage, and these fluid passages be integrated into before or after the fuel battery form fuel inlet, fuel outlet on the end plate, oxidant inlet, oxidant outlet, cooling fluid import, cooling fluid outlet.
For example: Ballard Power Systems company, at Us Patent 5,773,160 and Us Patent5, in 840,438 United States Patent (USP)s such as grade the design of two kinds of used flow guide plate of fuel cell as shown in Figure 1,1 is the guide plate of this fuel cell among the figure.
The fluid bore of above-mentioned flow guide plate of fuel cell and guiding gutter design have following characteristics:
1, is overlapped into fuel cell pack for guide plate and electrode with quantity more (can reach one to 200), each fluid bore on the guide plate often is designed to bigger area, the fluid bore of oxidant air particularly, because it is very big that air mass flow needs, its fluid bore area is also very big, can make battery enough big like this, the fluid of enough big flow can be evenly distributed on each piece guide plate with regard to the fluid duct volume in the heap.
2, in order to increase electrode two side fuel hydrogen and oxidant air to electrode reaction district rapid diffusion, the guiding gutter on the guide plate often is designed to snakelike or having many bends or curves shape, makes fluid pass through to form turbulent flow, is beneficial to the electrode interior reaction zone and spreads.
Above-mentioned flow guide plate of fuel cell fluid duct and guiding gutter design have following technological deficiency:
Each fluid bore area on the guide plate is bigger, and every kind of fluid advances from the inlet fluid orifice flow, generally need be having many bends or curves around time whole water conservancy diversion field along guiding gutter more than one, and each bar guiding gutter also together flows out from the outlet fluid bore.Because it is very big more than one guiding gutter bendability, and guiding gutter length is longer, the product water that fuel cell generates is easy in the appearance of electrode cathode side and the air conducting groove is stopped up, and the product water that fuel cell generates also is easy to occur in the electrode anode side by reverse osmosis, and the hydrogen flow guide groove is stopped up.When particularly fuel cell is used as car, ship power system or movable Blast Furnace Top Gas Recovery Turbine Unit (TRT), because the working conditions change of dynamical system is very big, the power output of fuel cell also alters a great deal, and the water of fuel cell generation is easier like this stops up air, hydrogen flow guide groove.In addition, for the water slug guiding gutter that prevents that fuel cell from generating, often adopt the air and hydrogen metering ratio that improves fuel cell operation, just strengthen air, hydrogen flowing quantity, take product water out of fuel cell with excessive air, hydrogen, this operation method is actually and greatly reduces fuel cell system efficient, because excessive air is wasted or excessive hydrogen is recycled conveying, must cause the mechanical consumption of carrying air or circulating hydrogen to increase, thereby reduce fuel cell system efficient.
Once more, when flow guide plate of fuel cell air conducting groove in service or hydrogen flow guide groove stopped up, it was very low even negative value occurs to show certain indivedual cell voltage that stop up, and causes the fuel cell operation instability, electrode can be punctured when serious, and the entire cell heap is damaged.
Shenli Science and Technology Co Ltd, Shanghai is in order to overcome the shortcoming of above-mentioned design, (the application for a patent for invention number: 02155095.6 of " a kind of guide plate that improves fuel cell operation stability " patent was once disclosed, utility application number: 02283431.1), the structural representation of its guide plate as shown in Figure 2,2,3 are respectively and import and export fluid bore, guiding gutter among the figure.A kind of guide plate that improves fuel cell operation stability comprises the guide plate body, and this body is provided with the fluid bore that can supply turnover air, turnover hydrogen, the circulation of turnover cooling water, and is connected in into and out of the guiding gutter between the fluid bore; It is characterized in that the fluid bore of described turnover air or turnover hydrogen is one or more pairs of, is arranged on these one or more pairs of guiding gutters between fluid bore and is many parallel wavy shapes or bending.To be that bipolar plates two ends are one or more pairs of be symmetry shape respectively into and out of fluid bore and be distributed in pole plate two ends the design feature of these flow-guide double-pole plates, occupied the bigger effective area of plate, between a plurality of various flows body openings in the difficulty of arranging of same end.
In order to overcome the shortcoming of above-mentioned design, supernatural power company has developed a kind of guide plate of fuel cell, the structural representation of its guide plate as shown in Figure 3,4,5 are respectively the import and export fluid bore among the figure, 6 is guiding gutter.A kind of guide plate of fuel cell, this guide plate is a flow-guide double-pole plate, described flow-guide double-pole plate by front airflow guiding slot plate, reverse side hydrogen flow guiding slot plate, middle conduction cooling but the fluid interlayer form, described flow-guide double-pole plate is provided with the fluid bore that can supply turnover air, turnover hydrogen, turnover cooling fluid, and is connected in into and out of the guiding gutter between the fluid bore; It is characterized in that the fluid bore of described turnover air or turnover hydrogen is that single hole advances, diplopore or porous go out, be arranged on guiding gutter between this turnover air or the hydrogen stream body opening and be designed to direct current groove or near direct current groove; The fluid bore of described turnover cooling fluid is single hole or diplopore or porous is advanced, diplopore or porous go out, and the guiding gutter that is arranged between the fluid bore of this turnover cooling fluid is designed to direct current groove or nearly direct current groove.The design feature of this baffler be the fluid bore of bipolar plates for singly advancing, twoly go out or have more, bipolar plates is vertical with ground level during use, is distributed in the fluid bore that of bipolar plates inferior horn, low with respect to the position that single hole advances, be along the gravity direction discharging, thus more smooth and easy, be difficult for water blockoff; Be distributed in angle on the bipolar plates to go out fluid bore low with respect to the position that single hole advances, be contrary gravity direction discharging, so water is difficult for discharging, have some setbacks, water blockoff easily takes place, thereby it is inhomogeneous that the entire plate fluid is flowed.
Summary of the invention
Purpose of the present invention provides a kind of fluid that makes contrary gravitational discharge also can flowing evenly, smoothly on the flow field for the defective that overcomes above-mentioned prior art and exist, prevent the flow guide plate of fuel cell that is difficult for water blockoff that guiding gutter stops up.
Purpose of the present invention can be achieved through the following technical solutions: a kind of flow guide plate of fuel cell that is difficult for water blockoff, this guide plate is a flow-guide double-pole plate, described flow-guide double-pole plate by front airflow guiding slot plate, reverse side hydrogen flow guiding slot plate, middle conduction cooling but the fluid interlayer form, described flow-guide double-pole plate is provided with the fluid bore that can supply turnover air, turnover hydrogen, turnover cooling fluid, and is connected in into and out of the guiding gutter between the fluid bore; It is characterized in that, the fluid bore of described turnover air or turnover hydrogen is that single hole advances, diplopore or porous go out, the link slot that is provided with guiding gutter and connection guiding gutter between this turnover air or the hydrogen stream body opening, guiding gutter and link slot all are designed to direct current groove or nearly direct current groove; The fluid bore of described turnover cooling fluid is single hole or diplopore or porous is advanced, diplopore or porous go out, the link slot that is provided with guiding gutter and connection guiding gutter between the fluid bore of this turnover cooling fluid, guiding gutter and link slot all are designed to direct current groove or nearly direct current groove.
Described lead air or hydrogen stream frid advance air or the hydrogen single hole is told many guiding gutters, these many guiding gutters are respectively told many guiding gutters, this guiding gutter is pooled to many guiding gutters of the other end after through the flow field again, by many parallel link slots should many guiding gutters be communicated with, enter respectively successively more two or morely to go out in air or the hydrogen blistering.
Described lead air or hydrogen stream frid advance air or the hydrogen single hole is told many guiding gutters, these many guiding gutters are respectively told many guiding gutters, this guiding gutter is pooled to many guiding gutters of the other end after through the flow field again, to go out many guiding gutters connections at air or hydrogen stream body opening place near angle on the bipolar plates by many parallel link slots, and connect the guiding gutter of into going up inferior horn clearancen gas or hydrogen stream body opening with a parallel link slot, enter respectively successively more two or morely to go out in air or the hydrogen blistering.
Described lead air or hydrogen stream frid advance air or the hydrogen single hole is told many guiding gutters, these many guiding gutters are respectively told many guiding gutters, this guiding gutter is pooled to many leading chutes of the other end after through the flow field again, by many parallel link slots should many guiding gutter is corresponding one by one is communicated with, enter respectively successively more two or morely to go out in air or the hydrogen blistering.
Described lead air or hydrogen stream frid advance air or the hydrogen single hole is told many guiding gutters, these many guiding gutters are respectively told many chutes, this chute through the flow field after with sipes vertical connection one by one, this sipes goes out air or hydrogen blistering is connected with two or more respectively again.
The described conduction cooling but single hole of fluid interlayer or diplopore or porous influent stream body opening is told many guiding gutters, these many guiding gutters are respectively told many guiding gutters, this guiding gutter is pooled to many guiding gutters of the other end after through the flow field again, by many parallel link slots should many guiding gutters be communicated with, enter respectively successively again in two or more fluid bore that go out cooling fluid.
The described conduction cooling but single hole of fluid interlayer or diplopore or porous influent stream body opening is told many sow (channel)s, these many guiding gutters are respectively told many guiding gutters, this guiding gutter is pooled to many guiding gutters of the other end after through the flow field again, to go out many guiding gutters connections at the fluid bore place of cooling fluid near angle on the bipolar plates by many parallel link slots, and connect with a parallel link slot and into to go up the guiding gutter that inferior horn goes out the fluid bore of cooling fluid, enter respectively successively again in two or more fluid bore that go out cooling fluid.
The described conduction cooling but single hole of fluid interlayer or diplopore or porous influent stream body opening is told many guiding gutters, these many guiding gutters are respectively told many guiding gutters, this guiding gutter is pooled to many guiding gutters of the other end after through the flow field again, by many parallel link slots should many guiding gutter is corresponding one by one is communicated with, enter respectively successively again in two or more fluid bore that go out cooling fluid.
The described conduction cooling but single hole of fluid interlayer or diplopore or porous influent stream body opening is told many sow (channel)s, these many guiding gutters are respectively told many chutes, this chute through the flow field after with sipes vertical connection one by one, this sipes is connected with two or more fluid bore that go out cooling fluid respectively again.
Compared with prior art, characteristics of the present invention are: the big water gaging that fuel cell generates, the general main bipolar plates Lower Half that concentrates on, single hole influent stream body opening generally is located at guide plate centre position, two ends up and down, fluid is divided into diplopore through guiding gutter or porous goes out, connect guiding gutter with parallel link slot, can make contrary gravity direction exhaust, draining and even, smooth and easy, be difficult for taking place water blockoff along gravity direction exhaust, draining.
Description of drawings
Fig. 1 is the structural representation of existing guide plate;
Fig. 2 is the structural representation of another kind of existing guide plate;
Fig. 3 is the structural representation of another kind of existing guide plate;
Fig. 4 is the structural representation of the airflow guiding slot plate of the embodiment of the invention 1 flow-guide double-pole plate;
Fig. 5 is the structural representation of the airflow guiding slot plate of the embodiment of the invention 2 flow-guide double-pole plates;
Fig. 6 is the structural representation of the airflow guiding slot plate of the embodiment of the invention 3 flow-guide double-pole plates.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
As shown in Figure 4, a kind of flow guide plate of fuel cell that is difficult for water blockoff, this guide plate is a flow-guide double-pole plate, described flow-guide double-pole plate is by the front airflow guiding slot plate, the reverse side hydrogen flow guiding slot plate, middle conduction cooling but fluid interlayer is formed, described airflow guiding slot plate is provided with single hole 7 and advances, diplopore 8 goes out the fluid bore of air, advance the fluid bore of air and tell six airflow guiding grooves, these six airflow guiding grooves are respectively told four airflow guiding grooves 9 that is parallel direct current shape, this airflow guiding groove 9 is pooled to six airflow guiding grooves 10 of the other end again, with the corresponding one by one connection of airflow guiding groove 10, airflow guiding groove 10 enters out respectively in the fluid bore 8 of air again by many parallel link slots 11; Described hydrogen flow guiding slot plate is provided with the fluid bore that single hole advances, diplopore goes out hydrogen, advance the fluid bore of hydrogen and tell six hydrogen flow guiding grooves, these six hydrogen flow guiding grooves are respectively told four hydrogen flow guiding grooves that is parallel direct current shape, this hydrogen flow guiding groove is pooled to six hydrogen flow guiding grooves of the other end again, with the corresponding one by one connection of this hydrogen flow guiding groove, enter out in the fluid bore of hydrogen by many parallel link slots more respectively; Described conduction cooling but fluid interlayer is provided with the fluid bore that diplopore advances, diplopore goes out cooling fluid, advance the fluid bore of cooling fluid and tell but fluid chute of six conduction coolings, these six conduction coolings but fluid chute are respectively told but fluid chute of four conduction coolings that are parallel direct current shape, this conduction cooling is the fluid chute but fluid chute of six conduction coolings that is pooled to the other end again but,, enter out respectively in the fluid bore of cooling fluid again the but corresponding one by one connection of fluid chute of this conduction cooling by many parallel link slots.
As shown in Figure 5, a kind of flow guide plate of fuel cell that is difficult for water blockoff, this guide plate is a flow-guide double-pole plate, described flow-guide double-pole plate is by the front airflow guiding slot plate, the reverse side hydrogen flow guiding slot plate, middle conduction cooling but fluid interlayer is formed, described airflow guiding slot plate is provided with single hole and advances, diplopore goes out the fluid bore of air, advance the fluid bore of air and tell six airflow guiding grooves, these six airflow guiding grooves are respectively told four airflow guiding grooves that is parallel direct current shape, this airflow guiding groove is pooled to six airflow guiding grooves of the other end again, and will be near many guiding gutters connections at angle clearancen air-flow body opening place on the bipolar plates by many parallel link slots 12, and connect the guiding gutter that advances to go up inferior horn clearancen pore with a parallel link slot 13, these six airflow guiding grooves enter out in the fluid bore of air more respectively; Described hydrogen flow guiding slot plate is provided with the fluid bore that single hole advances, diplopore goes out hydrogen, advance the fluid bore of hydrogen and tell six hydrogen flow guiding grooves, these six hydrogen flow guiding grooves are respectively told four hydrogen flow guiding grooves that is parallel direct current shape, this hydrogen flow guiding groove is pooled to six hydrogen flow guiding grooves of the other end again, and will be communicated with near many guiding gutters that angle on the bipolar plates go out hydrogen stream body opening place by many parallel link slots, and connect with a parallel link slot and into to go up the guiding gutter that inferior horn goes out hydrogen blistering, these six hydrogen flow guiding grooves enter out in the fluid bore of hydrogen more respectively; Described conduction cooling but fluid interlayer is provided with diplopore and advances, diplopore goes out the fluid bore of cooling fluid, advance the fluid bore of cooling fluid and tell but fluid chute of six conduction coolings, these six conduction coolings but fluid chute are respectively told but fluid chute of four conduction coolings that are parallel direct current shape, this conduction cooling is the fluid chute but fluid chute of six conduction coolings that is pooled to the other end again but, and will be communicated with near many guiding gutters that angle on the bipolar plates go out the fluid bore place of cooling fluid by many parallel link slots, and connect with a parallel link slot and into to go up the guiding gutter that inferior horn goes out the fluid bore of cooling fluid, these six conduction coolings but fluid chute enter out respectively in the fluid bore of cooling fluid again.
Embodiment 3
As shown in Figure 6, a kind of flow guide plate of fuel cell that is difficult for water blockoff, this guide plate is a flow-guide double-pole plate, described flow-guide double-pole plate is by the front airflow guiding slot plate, the reverse side hydrogen flow guiding slot plate, middle conduction cooling but fluid interlayer is formed, described airflow guiding slot plate is provided with single hole and advances, diplopore goes out the fluid bore of air, advance the fluid bore of air and tell six airflow guiding grooves, these two airflow guiding grooves are respectively told four airflow guiding grooves that is parallel direct current shape, this airflow guiding groove through the flow field after with sipes 14 vertical connection one by one, this sipes 14 goes out airport and is connected with two respectively again; Described hydrogen flow guiding slot plate is provided with the fluid bore that single hole advances, diplopore goes out hydrogen, advance the fluid bore of hydrogen and tell six hydrogen flow guiding grooves, these six hydrogen flow guiding grooves are respectively told four hydrogen flow guiding grooves that is parallel direct current shape, this hydrogen flow guiding groove through the flow field after with sipes vertical connection one by one, this sipes goes out hydrogen blistering and is connected with two respectively again; Described conduction cooling but fluid interlayer is provided with the fluid bore that diplopore advances, diplopore goes out cooling fluid, advance the fluid bore of cooling fluid and tell but fluid chute of six conduction coolings, these six conduction coolings but fluid chute are respectively told but fluid chute of four conduction coolings that are parallel direct current shape, this airflow guiding groove through the flow field after with sipes vertical connection one by one, this sipes goes out the cool stream body opening and is connected with two respectively again.
Please refer to Fig. 4,5, shown in 6, a kind of flow guide plate of fuel cell that is difficult for water blockoff, this guide plate is a flow-guide double-pole plate, described flow-guide double-pole plate is by the front airflow guiding slot plate, the reverse side hydrogen flow guiding slot plate, middle conduction cooling but fluid interlayer is formed, described airflow guiding slot plate is provided with single hole and advances, three holes go out the fluid bore of air, advance the fluid bore of air and tell 20 airflow guiding grooves, these 20 airflow guiding grooves are respectively told two airflow guiding grooves that is parallel direct current shape, this airflow guiding groove is pooled to 20 airflow guiding grooves of the other end again, these 20 airflow guiding grooves are communicated with by the parallel link slot of the six roots of sensation, go out airport and are connected with three respectively again; Described hydrogen flow guiding slot plate is provided with the fluid bore that single hole advances, three holes go out hydrogen, advance the fluid bore of hydrogen and tell three hydrogen flow guiding grooves, these three hydrogen flow guiding grooves are respectively told ten hydrogen flow guiding grooves that is parallel direct current shape, this hydrogen flow guiding groove is pooled to three hydrogen flow guiding grooves of the other end again, with the corresponding one by one connection of this hydrogen flow guiding groove, enter out in the fluid bore of hydrogen by many parallel link slots more respectively; Described conduction cooling but fluid interlayer is provided with the fluid bore that four holes are advanced, four holes go out cooling fluid, advance the fluid bore of cooling fluid and tell but fluid chute of four conduction coolings, these four conduction coolings but fluid chute are respectively told but fluid chute of ten conduction coolings that are parallel direct current shape, this conduction cooling is the fluid chute but fluid chute of four conduction coolings that is pooled to the other end again but,, enter out respectively in the fluid bore of cooling fluid again the but corresponding one by one connection of fluid chute of this conduction cooling by many parallel link slots.
Claims (9)
1. flow guide plate of fuel cell that is difficult for water blockoff, this guide plate is a flow-guide double-pole plate, described flow-guide double-pole plate by front airflow guiding slot plate, reverse side hydrogen flow guiding slot plate, middle conduction cooling but the fluid interlayer form, described flow-guide double-pole plate is provided with the fluid bore that can supply turnover air, turnover hydrogen, turnover cooling fluid, and is connected in into and out of the guiding gutter between the fluid bore; It is characterized in that the fluid bore of described turnover air or turnover hydrogen is that single hole advances, porous goes out, the link slot that is provided with guiding gutter and connection guiding gutter between this turnover air or the hydrogen stream body opening, guiding gutter and link slot all are designed to direct current groove; The fluid bore of described turnover cooling fluid is a single hole or porous is advanced, porous goes out, being provided with guiding gutter and connecting the link slot of guiding gutter between the fluid bore of this turnover cooling fluid, and guiding gutter and link slot all are designed to direct current groove.
2. a kind of flow guide plate of fuel cell that is difficult for water blockoff according to claim 1, it is characterized in that, described lead air or hydrogen stream frid advance air or the hydrogen single hole is told many guiding gutters, these many guiding gutters are respectively told many guiding gutters, this guiding gutter is pooled to many guiding gutters of the other end after through the flow field again, by many parallel link slots should many guiding gutters be communicated with, enter respectively successively more a plurality ofly to go out in air or the hydrogen blistering.
3. a kind of flow guide plate of fuel cell that is difficult for water blockoff according to claim 1, it is characterized in that, described lead air or hydrogen stream frid advance air or the hydrogen single hole is told many guiding gutters, these many guiding gutters are respectively told many guiding gutters, this guiding gutter is pooled to many guiding gutters of the other end after through the flow field again, to go out many guiding gutters connections at air or hydrogen stream body opening place near angle on the bipolar plates by many parallel link slots, and connect the guiding gutter of into going up inferior horn clearancen gas or hydrogen stream body opening with a parallel link slot, enter respectively successively more a plurality ofly to go out in air or the hydrogen blistering.
4. a kind of flow guide plate of fuel cell that is difficult for water blockoff according to claim 1, it is characterized in that, described lead air or hydrogen stream frid advance air or the hydrogen single hole is told many guiding gutters, these many guiding gutters are respectively told many guiding gutters, this guiding gutter is pooled to many leading chutes of the other end after through the flow field again, by many parallel link slots should many leading chute is corresponding one by one is communicated with, enter respectively successively more a plurality ofly to go out in air or the hydrogen blistering.
5. a kind of flow guide plate of fuel cell that is difficult for water blockoff according to claim 1, it is characterized in that, described lead air or hydrogen stream frid advance air or the hydrogen single hole is told many guiding gutters, these many guiding gutters are respectively told many chutes, this chute through the flow field after with sipes vertical connection one by one, this sipes goes out air or hydrogen blistering is connected with a plurality of respectively again.
6. a kind of flow guide plate of fuel cell that is difficult for water blockoff according to claim 1, it is characterized in that, the described conduction cooling but single hole or the porous influent stream body opening of fluid interlayer is told many guiding gutters, these many guiding gutters are respectively told many guiding gutters, this guiding gutter is pooled to many guiding gutters of the other end after through the flow field again, by many parallel link slots should many guiding gutters be communicated with, enter respectively successively again in a plurality of fluid bore that go out cooling fluid.
7. a kind of flow guide plate of fuel cell that is difficult for water blockoff according to claim 1, it is characterized in that, the described conduction cooling but single hole or the porous influent stream body opening of fluid interlayer is told many sow (channel)s, these many sow (channel)s are respectively told many guiding gutters, this guiding gutter is pooled to many guiding gutters of the other end after through the flow field again, to go out many guiding gutters connections at the fluid bore place of cooling fluid near angle on the bipolar plates by many parallel link slots, and connect with a parallel link slot and into to go up the guiding gutter that inferior horn goes out the fluid bore of cooling fluid, enter respectively successively again in a plurality of fluid bore that go out cooling fluid.
8. a kind of flow guide plate of fuel cell that is difficult for water blockoff according to claim 1, it is characterized in that, the described conduction cooling but single hole or the porous influent stream body opening of fluid interlayer is told many guiding gutters, these many guiding gutters are respectively told many guiding gutters, this guiding gutter is pooled to many guiding gutters of the other end after through the flow field again, by many parallel link slots should many guiding gutter is corresponding one by one is communicated with, enter respectively successively again in a plurality of fluid bore that go out cooling fluid.
9. a kind of flow guide plate of fuel cell that is difficult for water blockoff according to claim 1, it is characterized in that, the described conduction cooling but single hole or the porous influent stream body opening of fluid interlayer is told many sow (channel)s, these many sow (channel)s are respectively told many chutes, this chute through the flow field after with sipes vertical connection one by one, this sipes is connected with a plurality of fluid bore that go out cooling fluid respectively again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100275476A CN100479244C (en) | 2006-06-10 | 2006-06-10 | A fuel battery flow guiding polarized plate without water blockage |
Applications Claiming Priority (1)
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| CNB2006100275476A CN100479244C (en) | 2006-06-10 | 2006-06-10 | A fuel battery flow guiding polarized plate without water blockage |
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| CN100479244C true CN100479244C (en) | 2009-04-15 |
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| CN103247807B (en) * | 2012-02-08 | 2015-07-08 | 武汉众宇动力系统科技有限公司 | Proton exchange membrane fuel cell based on phase-change heat transfer and bipolar plate thereof |
| CN102637884A (en) * | 2012-04-27 | 2012-08-15 | 中国东方电气集团有限公司 | Bipolar plate, cooling plate and fuel battery stack |
| CN105489913B (en) * | 2015-12-15 | 2018-06-29 | 武汉理工新能源有限公司 | A kind of fuel battery double plates |
| JP6649412B2 (en) * | 2018-01-10 | 2020-02-19 | 本田技研工業株式会社 | Fuel cell and fuel cell stack |
| CN112290048A (en) * | 2020-09-16 | 2021-01-29 | 艾氢技术(苏州)有限公司 | Solid hydrogen fuel cell motor home |
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